{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:FS3CNIY4YHEYGEDMQXXOBEX353","short_pith_number":"pith:FS3CNIY4","canonical_record":{"source":{"id":"1302.2188","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2013-02-09T02:45:15Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"2285536d8fafb3d7ecd2c14aba5416308a09431a0bf2e513d8ae9fe2191c1981","abstract_canon_sha256":"88b2bb679ebca1500b5be7bcf49d294b141405db1c4ec040049f8d7c422a8a38"},"schema_version":"1.0"},"canonical_sha256":"2cb626a31cc1c983106c85eee092fbeed2a3468b411a9553d31f5df7cb579486","source":{"kind":"arxiv","id":"1302.2188","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.2188","created_at":"2026-05-18T01:51:43Z"},{"alias_kind":"arxiv_version","alias_value":"1302.2188v3","created_at":"2026-05-18T01:51:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.2188","created_at":"2026-05-18T01:51:43Z"},{"alias_kind":"pith_short_12","alias_value":"FS3CNIY4YHEY","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"FS3CNIY4YHEYGEDM","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"FS3CNIY4","created_at":"2026-05-18T12:27:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:FS3CNIY4YHEYGEDMQXXOBEX353","target":"record","payload":{"canonical_record":{"source":{"id":"1302.2188","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2013-02-09T02:45:15Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"2285536d8fafb3d7ecd2c14aba5416308a09431a0bf2e513d8ae9fe2191c1981","abstract_canon_sha256":"88b2bb679ebca1500b5be7bcf49d294b141405db1c4ec040049f8d7c422a8a38"},"schema_version":"1.0"},"canonical_sha256":"2cb626a31cc1c983106c85eee092fbeed2a3468b411a9553d31f5df7cb579486","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:51:43.160326Z","signature_b64":"yI5CjfJbOB5BbUjOtLnNrsIKhbT/waVhacr8KZ6/cHfsqmLkgyT+4I40Amj9zMjGZC0NbhygtjVyrspDBM0PAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2cb626a31cc1c983106c85eee092fbeed2a3468b411a9553d31f5df7cb579486","last_reissued_at":"2026-05-18T01:51:43.159731Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:51:43.159731Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1302.2188","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:51:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+MQ9Pm+34YWrKxG0odORpRCA0Nujc6kFQD95Dscw8KwRJ2I2PkIC0Zw5m/ZsSIkshlixRYNqAA2zSY+JL/OJAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T17:35:34.829929Z"},"content_sha256":"732b461ba5301157160472bbd1ec25ab70be71a476e2cec63089b6a2a3af775f","schema_version":"1.0","event_id":"sha256:732b461ba5301157160472bbd1ec25ab70be71a476e2cec63089b6a2a3af775f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:FS3CNIY4YHEYGEDMQXXOBEX353","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"First Long-Term Application of Squeezed States of Light in a Gravitational-Wave Observatory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"physics.ins-det","authors_text":"H. Grote, H. Vahlbruch, J. Slutsky, K. Danzmann, K.L. Dooley, R. Schnabel","submitted_at":"2013-02-09T02:45:15Z","abstract_excerpt":"We report on the first long-term application of squeezed vacuum states of light to improve the shot-noise-limited sensitivity of a gravitational-wave observatory. In particular, squeezed vacuum was applied to the German/British detector GEO600 during a period of three months from June to August 2011, when GEO600 was performing an observational run together with the French/Italian Virgo detector. In a second period squeezing application continued for about 11 months from November 2011 to October 2012. During this time, squeezed vacuum was applied for 90.2% (205.2 days total) of the time that sc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.2188","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:51:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"INJ3beNDcwARxG1zq0KID519UeleJtacZ2HJ8/TjFz60xzGpgb6uZ4zG162Y06f4ekQwi+jQ75oBdx84WHXtCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T17:35:34.830591Z"},"content_sha256":"3f90c71452e85801e01e12fd85aab91b90e760e2dc5293954c7fc7fc4cfad1ad","schema_version":"1.0","event_id":"sha256:3f90c71452e85801e01e12fd85aab91b90e760e2dc5293954c7fc7fc4cfad1ad"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FS3CNIY4YHEYGEDMQXXOBEX353/bundle.json","state_url":"https://pith.science/pith/FS3CNIY4YHEYGEDMQXXOBEX353/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FS3CNIY4YHEYGEDMQXXOBEX353/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-27T17:35:34Z","links":{"resolver":"https://pith.science/pith/FS3CNIY4YHEYGEDMQXXOBEX353","bundle":"https://pith.science/pith/FS3CNIY4YHEYGEDMQXXOBEX353/bundle.json","state":"https://pith.science/pith/FS3CNIY4YHEYGEDMQXXOBEX353/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FS3CNIY4YHEYGEDMQXXOBEX353/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:FS3CNIY4YHEYGEDMQXXOBEX353","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"88b2bb679ebca1500b5be7bcf49d294b141405db1c4ec040049f8d7c422a8a38","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2013-02-09T02:45:15Z","title_canon_sha256":"2285536d8fafb3d7ecd2c14aba5416308a09431a0bf2e513d8ae9fe2191c1981"},"schema_version":"1.0","source":{"id":"1302.2188","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.2188","created_at":"2026-05-18T01:51:43Z"},{"alias_kind":"arxiv_version","alias_value":"1302.2188v3","created_at":"2026-05-18T01:51:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.2188","created_at":"2026-05-18T01:51:43Z"},{"alias_kind":"pith_short_12","alias_value":"FS3CNIY4YHEY","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"FS3CNIY4YHEYGEDM","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"FS3CNIY4","created_at":"2026-05-18T12:27:45Z"}],"graph_snapshots":[{"event_id":"sha256:3f90c71452e85801e01e12fd85aab91b90e760e2dc5293954c7fc7fc4cfad1ad","target":"graph","created_at":"2026-05-18T01:51:43Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We report on the first long-term application of squeezed vacuum states of light to improve the shot-noise-limited sensitivity of a gravitational-wave observatory. In particular, squeezed vacuum was applied to the German/British detector GEO600 during a period of three months from June to August 2011, when GEO600 was performing an observational run together with the French/Italian Virgo detector. In a second period squeezing application continued for about 11 months from November 2011 to October 2012. During this time, squeezed vacuum was applied for 90.2% (205.2 days total) of the time that sc","authors_text":"H. Grote, H. Vahlbruch, J. Slutsky, K. Danzmann, K.L. Dooley, R. Schnabel","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2013-02-09T02:45:15Z","title":"First Long-Term Application of Squeezed States of Light in a Gravitational-Wave Observatory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.2188","kind":"arxiv","version":3},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:732b461ba5301157160472bbd1ec25ab70be71a476e2cec63089b6a2a3af775f","target":"record","created_at":"2026-05-18T01:51:43Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"88b2bb679ebca1500b5be7bcf49d294b141405db1c4ec040049f8d7c422a8a38","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2013-02-09T02:45:15Z","title_canon_sha256":"2285536d8fafb3d7ecd2c14aba5416308a09431a0bf2e513d8ae9fe2191c1981"},"schema_version":"1.0","source":{"id":"1302.2188","kind":"arxiv","version":3}},"canonical_sha256":"2cb626a31cc1c983106c85eee092fbeed2a3468b411a9553d31f5df7cb579486","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2cb626a31cc1c983106c85eee092fbeed2a3468b411a9553d31f5df7cb579486","first_computed_at":"2026-05-18T01:51:43.159731Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:51:43.159731Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yI5CjfJbOB5BbUjOtLnNrsIKhbT/waVhacr8KZ6/cHfsqmLkgyT+4I40Amj9zMjGZC0NbhygtjVyrspDBM0PAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:51:43.160326Z","signed_message":"canonical_sha256_bytes"},"source_id":"1302.2188","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:732b461ba5301157160472bbd1ec25ab70be71a476e2cec63089b6a2a3af775f","sha256:3f90c71452e85801e01e12fd85aab91b90e760e2dc5293954c7fc7fc4cfad1ad"],"state_sha256":"18746a313b4c2a671eeffa0443631f58c0efd9974dd734d5098464231c6bcc86"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YJLDsKgaq6q+rU4eR2gVqt5MPK6n0NA4Ov33SSQasxbfb9slPb10IJFtEneQwSHWS/ICCsLiV4h5/DG/nh63DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T17:35:34.833819Z","bundle_sha256":"47da178c5845adeb325561680991b9688ba5bf183762d9a75dcbd98a5d0affa5"}}